Side frame for car trucks



J. J. MBRIDE SIDE FRAME FOR CAR TRUCKS Filed Sept. 6. 19,29

Patented Jan. 6, Y19731 v met;

JoHN tr#giviarmaron,y or B luzoisnan,k NEwrJgEBsnY sinn FRAM ron CAR manoirs Application jfilefi September This `invention relates to Vsideframes for as particular reier-v railway Vcartrucks and h n ence; .to means for supporting the Aspring p'lanki' I oftentimes the sill of the franieat the bolster openin'gis not positioned as to support the spring plank parallel, With the journal box. Inv other Words',A

sill at the bolster' opening is not parallel with the journal boX- bearing portion. In Lthe event of such a defectl the Weight of the car Will force the spring plank seat' to a position 15 parallel with the rails -andithis, in eliect7V causes the entire frame to be tilted in order that thespring plank ymay be properly' seated. This changes the line of application oi force or Weight away as Will be apparent, application of force on the the end of the fra-me and consequently hot boxes and uneven wear on the journal bearings result.

One object of theV presen-t invention is the provision of a new and improved side trame s for railway car trucks. Y,

Another object of the invention is vthe provision of means for properly seating the spring plankin a railway car truck.

U'till another object is the provision oi': a self-adjusting spring plank support.

A further object ofthe present invention is the provision of means for obtaining an accurate'positioning of the spring plank with respectto the journal 'box bea-ring portion of a side frame. I Y Y A still furthery object of this invention is the provision of a mountingfor a spring plank which is shiftable .transverse to the length of a side frame for obtaining an accurater positioning of a spring plank with respect to the journal box bearing portions of the side frame.

' Other objects 4and y advantages of this invention will be apparent from the tollowing d escription taken in conjunction with the accompanying drawings, in which:

0 Fig. l is a sideelevati'on of a side frame A cast side frame sometimes presents ide-l tects in casting amongy which 1s the 'act'that l 'in c-astinglthe frame, the

Vfrom the normalv line, causing an improper journal boxes at.

6,1929. s serial no. 390,721.

formed in'a'ccordancewith the present inventionymp j j r Fig. 2 is a sectional View on the line 2-2, `Fig. Land Y v vFiglgis a sectional view on the line 3dB,

Referring now more particularly to the drawings in Which similar characters o rei'- `erence#designate similar `parts in theseveral views, the side frame shown in elevation in Fig. l is illustrated merely by way ofexample, lasobviously the present inven-r tion may be appliedto other types of side frame. The `side 'frame shown is a casting p of truss forni7 having the compression and tension -nfiembers 2 and 1li respeetiveljnfthe latterhaving diagonale@ which merge aty their ends With the ends of the compression member 2 to forni bearing portions for journal boxes 8. The rside frame also includes the columns. l0 which define the bolster opening l2'through Which the bolster 14 and the spring `plank 16 extend; the` spring plank having at its ends the lugs 1,8 for positioning the springsQ() which latter carry spring caps 22 on which the bolster 1,4 rests.'

That kportion of the tension member Je at the bolster opening is ter-medV the silh and the sill in the present instance is shown clearly in section in Fig: Zand comprises a central supportingportion Qetwhichis holiow as shown at 25 and which in external contour is curved orarcuate. The-supporting portion Qaextends the 'full Width of the bolster opening. between the lower ends of the columnsy 1 0 as clearly shown in Fig. l and the sill 4 is .Kifurther Vprovided' with upturned flanges 26, one arranged on each side oiand spaced from the supporting portion 24 to define recesses 28 which receive the lower edges of a Wear plate SOWhich has its interior comple mental with the curve o 'itlie Asupporting portion 24 ywhereby to seat on. the' latter.

The Wear plate 30, as before mentioned, curved or arcuate in shape and Vsnipports a saddle indicated generally at 32 and which latter comprises a central portion 34- which in 'the instance shown is curved on a vgreater arc than the cui-vent Vthe Wear plate 3@ to provide a clearance '36 Lat each side fthereoi".`

. the same arc as that of the wear plate 30 to closely tit said wear plate if desired. The

saddle 82 also includes the oppositely extending side flanges 38 on which thespring plank 1G is supported. The spring plank has its end downwardly flanged as shown at 4 0 to lie adjacent the edge of the outeriange 38 and said spring plank is also provided adjacent the inner flange 38 with an abutment e2.. In use, it

` there be any inaccuracy or defectinr Casting wear on the boxes is from the spirit of the `invention.

the sill of the side frame such as would normally result rin the 'spring plank 16 vand journal box 8 being out of parallel relation itwill be apparent Vthat thesaddle 32 mayy shift on the wear plate 30, transversely` of the side frame andthereby support the spring plank in its proper yposition-and in parallel with the j ournal box; this resulting in a con-V struction in which the journal boxes are accurately maintained in their bearing portions at the ends of the side frame whereby uneven prevented and the life thereof lengthened; l

, The drawings herein are merely by wayfof eXampleand obviouslyvarious changes inthe form and proportions of the construction shown herein maybe made within the scope of the appended claims Withoutndepartmg `What is claimed is Y l. In a side frame forcar trucks compression and. tension members, and means for supportinga spring plank comprising a sad-Y dle supported bythe tensionpmember and on which the spring plank rests, 'said saddle being capable of only transverse shifting upon application of weight to the side frame.

2. In a side frame for car trucks,,compression and tension members, columns connecting said members and defining an opening,.

said tension member having a sill at the oper.-

ing comprising a supporting portion, a wear plate mounted on the supporting portion, and a saddle supported by the Wear plate and on which the spring plank of the truck rests,'said saddle being loosely mounted' on the wear plate whereby to shift transverselyof the side frame to permit the spring plank to be properly seated. Y Y

3. In a side frame for car trucks, vcompres- Y sion and tension members, columns connecting said members and defining an opening, said tension member having a sill at the opening comprising a supporting portion, a

wear plate mounted on the supporting por-A tion, and a saddle supported by2 the wear plate and on Whichthe'spring plank of the` truck rests, said saddle being loosely mounts` will be apparent that should nal boxes.`

5. Ina sideframe for car trucks, compressionv and tensionA members, a sill formed with the/tensionr me1nber`and comprising a supporting portion` a wear plate mounted on the su o rtinfr.- )ortion said wear )late havin b 7 C itsouter surface' curif'ed, and a saddle supported on the Wear plate having its contact-I ing areafcurved ron a-greater arc than that vof the wearfplate Y,whereby it may shift on 'said wear plate transversely to the side frame, said saddle having side flanges to support a spring plank. f

6. A side frame-forcartrucks comprising a-truss structure havinga sill formed with the tension member thereof, and a spring` plank supporting saddle mounted by the sill and automatically shiftable'only transversely thereof upon application of weight to the frame.y o

7. In a car truck, a cast truss side frame having journal box receiving portions at its ends, and a bolster and spring means providing'an automatically adjustable spring plank support comprising a saddle mounted on the sill of the tension member of the side framev and ,on which the spring plank is removably supported., said saddle beimY shiftable in an a 'c transverse to the side Iramefupon appli n of 'a car body to the truck whereby the spring plank supported in jnirallel with the journal lios receiving portions of the sidey traino.A

Si. vIn a side frame forV car .trut-ks, compre;- sion and tension members,` and means for supporting a spring plank,comprising a sill formed with the tensionmeniber and includinga `central supporting portionarranged hand.

Jenna. Moni-uns.

plank open- -f In witness whereof I have hereunto set my' aok 

